Coupling for locomotives



(No Model.)

T. L. MOKEEN. COUPLING FOR LOCOMOTIVES.

No. 447,579. Patented Mar. 3', 1891.

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c, s WW NITED STATES PATENT FFicE.

THOMAS L. MOKEEN, OF- NEW YORK, N. Y., ASSIGNOR TO THE THURMOND CAR COUPLING COMPANY, OF WEST VIRGINIA.

COUPLING FOR LOCOMOTIVES.

SPECIFICATION formingpart of Letters Patent No. 447,579, dated March 3, 1891.

Application filed October 25, 1890. Serial No. 369,347. (No model.) 7

T0 on whom it may concern.-

Be it known that I, THOMAS L. MOKEEN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Couplings for Locomotives; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to couplers of the twin-jaw type, as used on locomotive-tenders. In using couplers of this class with locomotive-tender hooks or draw-heads difficulty has heretofore been experienced from the fact that the coupler attached to the locomotivetender is rigidly secured thereto and incapable of lateral movement. One of the objects of my present invention is to obviate this difficulty, as hereinafter described.

Sometimes it is necessary to combine a coupler of the twin-jaw type or coupler of a locomotive-tender with an ordinary link-andpin coupler, and provision must therefore be made in these devices for the reception of the ordinary link and pin. This provision has generally consisted in forming a link-openin g and pin-hole in'the end of the coupling-hook; but, owing to the fact that the pins made use of are frequently bent, coupling-hooks of this construction are often broken in forcing the pin through the pin-hole. One of the objects of my present invention is to obviate this difficulty.

In the accompanying drawings, in which corresponding parts are designated by similar letters, Figure 1 is a plan View of the 10- comotive-tender coupler and a car-coupler of the twin-jaw type. Fig. 2 is a longitudinal vertical section taken on the linear: azof Fig. 1. Fig. 3 illustrates in perspective the coupler of a locomotive-tender. Figs. 4 and 5 illustrate the coupling-pin.

The face-place L is secured to the locomotive-tender M by means of bolts in the usual manner, and is provided with a projectingsocket N, in which is pivoted the draw-bar or coupler O. The draw-bar consists of a single solid piece of steel or other proper metal having a guardarm P and hook or jaw R,

provided with pin-holes B and link-opening C, said opening having rounded lips c for the free entry of the link. The coupler is also provided with another link-opening O and another pin-hole B, whichinsome cases may be used.

The projecting support N of the face-plate L has a recess S formed therein for the reception of the shank of the coupler T, in which is formed a cylindrical aperture U for the reception of the pivot-pin V. The rear end of the shank has a curved surface, the axis of which is the axis of the cylindrical pin V, and

the rear end of the recess or socket S is correspondinglycurved. Thisconstruction gives strength to the support N and at the same time allows the shank V to vibrate from side to side. The length of the vibrations of the shank U are limited by the sides IV of the support N, and I have found that a space of three-eighths of an inch between the sides of the shank in the sides W of the support is enough. to allow sufficient lateral movement to the coupler.

The jaw of the draw-head Y is pivoted with or recess E, extending from a point near its top to its bottom. A transverse aperture H is cut through the pin D to the groove or recess E, which it intersects at a point near thebottom of the pin. Within this aperture H is inserted the plug I, the ends of which are flush 0 with the cylindrical surface of the pin D. A boss K is formed upon the upper part of the hook, which projects into the pin-hole and is of such a size and shape as to fit accurately within the longitudinal groove or recess 5 formed in the pin. It will readily be seen that the slot may be cast in the hook and the boss be on the pin, whereby the same effect would be obtained and the pin be strengthened somewhat. the required position by causing the lower end of the groove E to register with the boss This 80 The pin is easily fitted in K and then lowering it until the shoulder e at the upper end of the recess E rests upon the boss. \V'nen the pin has been lowered to such an extent that the aperture II is within the link-opening C, the plug I may be inserted within it.

It is evident from the foregoing construction that the downward movement of the pin D will be limited by the contact of the stop 6 IO with the upper side of the boss K, and that the length of its upward movement will be determined by the contact of the end of the plug I, which projects into the recess E with the lower side of the said boss. The plug I should therefore be located at such a distance from the bottom of the pin that in raising the latter it would pass clear of the ]ink or linkopening. The pin 1) is fitted to the hook R of the couplerO in precisely the same manner that it is secured to the hook A.

Having thus described my invention, I claim and desire to secure by Letters Patent- 1. In a coupler for locomotive-tenders, the' combination of a face-plate having a projection containing a chamber having a semicylindrical rear interior face, a draw-head having a perforated shank extending into the face-plate with a semi-cylindrical rear face fitting loosely within the semi-cylindrical portion of the said chamber, a pin provided with a recess for the reception of the boss and a hole for the reception of the plug, and a plug which, when placed in the hole in the pin, prevents it from being removed from the hook, as and for the purposes described.

2. In a coupler for locomotive-tenders, the combination of a face-plate having a chambered projection, a draw-l1ead having a perforated shank which extends within the chamber of the face-plate, two pairs of pin-holes in the outer andinner portions of the said drawhead, with a slot for link-and-pin coupling be tween each pair, and a pivot-pin which passes through the chambered projection of the faceplate and the aperture of said shank, substantially as described.

3. In a coupler for locomot-ive-tenders, the combination of a faceplate having a projection containing a chamber having a semieylindrical rear interior face, a draw-head having a perforated shank exten ding into the face-plate, with a semi-cylindrical rear face fitting loosely within the semi-cylindrical portion of the said chamber, two pairs of pinholes in the outer and inner portions of the said draw-head, with a slot for link-and-pin coupling between each pair, and a pivot-pin which passes through the chambered projection of the face-plate and the aperture ofsaid shank, substantially as described.

In testimony whereof I aflix mysignature in presence of two witnesses.

THOMAS L. MOKEEN.

Witnesses:

Vin. M. LYDDY, A. H. FoRoI 

